Normally, we are not big cave people, but Kartchner Caverns are very nice. We took the “Big Room” guided tour which takes and Hour and 45 minutes. Very interesting and informative. We will take the Rotunda/Throne Tour the next time we are in town.
You are not allowed to take pictures or video. In fact they want you to leave all your stuff in your car or a locker to protect the cave. Here is a video showing the Caverns.